Create an account Home  ·  ·  Forums  ·  ·  Articles  ·  ·  Downloads  ·  ·  Photo Gallery  
Login
Nickname

Password

Don't have an account yet? You can create one here.

Navigation
· Home
· Article Archive
· Article Submit
· Downloads
· FAQ
· Forums
· Members List
· Photo Gallery
· Private Messages
· Web Links
· Your Account

Search Articles



Forums

Wiper motor...which is the correct one?
Lead additive, one more question.
M31C mount with or without replica weapon
Backfire and Hesitation
Wanted: Steering column and shaft for M38-1952, or late CJ2A
2024 CT. MILITARY VEHICLE SHOW AND FLEA MARKET- JUNE 15,2024
Brake Line
How to link full size photos in posts
Clutch release bearing support cast tab for return spring
T90 case replacement required?

Willys M Jeeps Forums


willysmjeeps.com :: View topic - Military junior oil filter
 Forum FAQForum FAQ   SearchSearch   UsergroupsUsergroups   ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Military junior oil filter

 
Post new topic   Reply to topic    willysmjeeps.com Forum Index -> Technical Knowledge Base
View previous topic :: View next topic  
Author Message
85jeepcj
Member


Joined: Mar 27, 2016
Posts: 16

PostPosted: Sun Jun 16, 2019 8:40 pm    Post subject: Military junior oil filter Reply with quote

Is the military junior filter same for both mb gpw and m38 engine.
As I understand the mb has no Oiler fitting inside the timing chain cover and the oil pressure is regulated by a small hole inside the oil filter canister.
The M38 has a Oiler fitting inside the timing cam cover that regulates oil engine pressure.
My question is in regards to the hole size inside the filter canister for chain drive vs the gear drive engines.
Back to top
View user's profile Send private message
wesk
Site Administrator
Site Administrator


Joined: Apr 04, 2005
Posts: 16227
Location: Wisconsin

PostPosted: Sun Jun 16, 2019 10:58 pm    Post subject: Reply with quote

The WWII Military junior filter is the same unchanged military junior used on the M38 pilot jeeps and the M38A1.

No real concern. The WWII chain drive engines had to have the filter installed so oil would return from the filter and coat the chain. Only purpose for the oil return hose from the filter on gear driven cam engines is to get the oil back to the sump. The gear driven cam engines care not how much oil flows back to the sump thru the oil return hose from the filter.

However the M38 blocks prefer the newer cam gear oil spray nozzle. Willys decided too many #1 rod bearing failures were being attributed to the 0.070 bore spray nozzle allowing a drop in oil pressure at the front of the crank. Willys brought a new nozzle into production with a 0.040 bore to sole the issue.

The change notice on the spray jet is at top Left of this page.


_________________
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php


Last edited by wesk on Mon Jun 17, 2019 9:28 am; edited 1 time in total
Back to top
View user's profile Send private message Send e-mail Visit poster's website
85jeepcj
Member


Joined: Mar 27, 2016
Posts: 16

PostPosted: Mon Jun 17, 2019 6:58 am    Post subject: Reply with quote

Thanks for the information
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    willysmjeeps.com Forum Index -> Technical Knowledge Base All times are GMT - 6 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

Powered by phpBB © 2001 phpBB Group
Forums ©

 



PHP-Nuke Copyright © 2005 by Francisco Burzi. This is free software, and you may redistribute it under the GPL. PHP-Nuke comes with absolutely no warranty, for details, see the license.